Friction casement-window adjuster



I AP 1927' E. J. SIBLEY FRICTION CASEMENT WINDOW ADJUSTER Filed Dec. 17,1925 2 Sheets-Sheet 1 1,625,915 Apnl 26 1927. E J. SIBLEY FRICTIONCASEMENT WINDOW ADJUSTER Filed Dec, 17, 1925 2 Sheet-Sheet g /7 j 75 74I 37 /J i 37 27 42 (fgaenboz Patented Apr. 26, 1927.

UNITED PATENT EH EDIVIII J'. SIBLEY, OF WEE-TB ITRY, NEW YORK.

rmc'rrou CASEMENT-WINDOW' newsman.

Application filed December 17, 1925. Serial No. 75,935.

novel means for operating the adjuster in cases where the windowstool 1sofa width.

which makes it impossible to employ a drop handle. In such cases it isnecessary to. employ a different kind of handle. It is a further objectof the invention to generally im-. prove the mechanism for operating thefries tion elements of theadjuster.

The invention will be more fully understood from the followingspecification read in connection with the accompanying drawings inwhich-.-

Figure 1 is a plan view, partly in section, of acaseinent windowadjuster embodying my invention and showing the adjuster in lockedposition.

Figure 2 is a similar view showing the ad juster in position with thewindow opened and the friction means unlocked.

Figure 3. is a longitudinal sectional view of the friction operatingmeans illustrating the particular type of handle used for opera ting theadjuster, parts being removed and parts broken away.

Figure 4 is a View similar to Figure 3 but shows the handle thrown backand the friction members unlocked.

Figure 5. is a detail plan view in section showing the friction memberoperating mechanism.

Figure 6 is a detail side view of the handle.

Figure 7 is a sectional detail View of parts of the adjuster.

Referring to the drawings the reference numeral 1 denotes the windowframe, 2 is the stool and 3 the window hinged at 4. These parts areshown conventionally.

The adj uster comprises a tube 6 preferably of rectangular crosssection. It is pivoted at 7 to abraclret 8 suitably secured to the freeend or side of the window. As seen in Figure 7' the tube 6 has an openbottom providing a slot 10. The inner end of the tube carries a collar11 which encloses the tube and within the collar the tube is cut away atthe one side to form a slot Within the tube are slidably supported twolevers. The lower one 14 may conveniently be termed a base lever and isprovided with a pivot hole 15. and is further bent as at 16 to form anadjuster operating portion 17 and a handle portion 18.. i

The upper level 19 may conveniently be termed the friction lever and isbent at 20 and is prov'ded with a slot 21. The. outer end of thefriction lever is cut away at 22 to form a friction head 24 and alocking tooth 25 beyond which the cut away portion is continued to. forma recess at 26. The inner end of the friction lever is provided: with anintegral rack 27.

The base lever 14 and the friction lever 13 are arranged to telescopewithin the tube 6: and to slide therein relative to. one another.

The base lever 14 occupies the full width of the tube throughout itslength, while in the case of the friction lever 19 only the frictionhead 24 has its sides parallel and of practically the same width as theinside of the tube. Both levers have a sliding fit within the tube.

The numeral 86- denotes a suitable support orbase which carries a fixedpivot 31. The base is secured to the window sill or stool 2. The levers14 and 19 are mounted on the pivot 31 by means of the aforesaid pivothole 15 and slot 27 in the two members respectively. A casing 32 fitsover the base 30. to cover the parts therein and is cut out as at 33, 33to permit the members 14 and 19 to pass therethrough. A screw 84 in thepivot 31 secures the levers 14 and 19 and the casing 32 in positionwithout clamping said levers.

The inner end or handle portion of the base lever 14 carries a channelguide 36 secured by screws 37. The guide is wrapped around the twolevers 14 and 19 and forms two upstanding bearing lugs 38, 38. A portion 39 of said channel guide is further bent upward and around thebearing lugs 38 to form ashield.

The numeral 40 denotes a handle which has two ears 41, 42. A pinion 43passes through the handle ears and through cylindrical holes 44 providedin the said bearing lugs 38. As seen in Figure 6, the handle car 41 isprovided with an opening in the form of the pinion 43, so that inassembling the parts, the pinion is pushed through the opening 45. thenthrough the holes 44. The pinion has a reduced portion 46 which passesthrough a hole in the handle car 42 and the end of the reduced portionis upset to secure the pinion in the handle.

The pinion meshes with the teeth in the rack 27 and it will be seen thatwhen the handle is operated the pinion turns therewith and operates therack.

The normal position of the handle is shown in Figures 1, 3 and 6, inwhich position the friction of the adjuster is locked in that thefriction lever 19 is drawn to the right in Figure 1, whereby thefriction head 24 is jammed or clamped tightly against the sides of thetube 6, as will be understood.

When it is desired to open the window, the handle is raised as shown inFigure at and consequently the pinion 43 is rotated to operate the rack27 to unlock the friction. This is shown in Figure 2 where it will beseen that the friction lever has been moved into a position parallel tothe sides of the tube 6 and as the adjuster is rotated on the pinion 31the tube 6 slides outwardly on thelevers and the window may be opened toany desired extent. The friction is locked with the window in openposition by dropping the handle down upon the adjuster as in Figure 3which will again cause the friction head to be locked Within the tube.

The friction lever 19 has a sliding movement obliquely to the base lever14 so that when the window is closed the locking tooth 25 passes insidethe collar 11. Thus in closed position not only is the adjuster lockedbecause of the locking of the friction, but it is further locked againstany attempt to open the window by pulling at its free edge because suchan attempt would be resisted by the locking tooth striking the edge 48of the slot 12 in the tube. The screw 49 shown in Figures 1 and 7prevents removal of the tube from the levers without first removing saidscrew. Without the latter there would be nothing to stop the outwardsliding movement of the tube on the lever.

The foregoing is thought to clearly disclose this invention and itsadvantages. As seen from the drawings the handle is conveniently moveddown upon the adjuster whereby to lock the friction in either open orclosed position of the window and irrespective of the width of the stool2. The handle is also conveniently grasped and raised whereby toautomatically unlock the friction and whereby to form a convenient meansfor swinging the adjuster on its pivot. The means for operating thefriction is very simple and practical, easily assembled and not subjectto wear or strains. The entire assembly is pleasing in appearance. Itshould be also noted that this construction embodies the correctprinciple in operating a window, namely, that of applying the pressurein the extreme free ends of the window in the bracket 8.

It has been found in practice that it is possible by properly designingthe parts to clutch or jam the friction head 2% within the tube 6 tosuch an extent that it is practically impossible to telescope theadjuster when the friction is on, and that this construction, therefore,provides a very much stronger grip on the window than that which can beobtained when intervening friction elements are employed. It is alsoobvious that the manufacturing cost is greatly reduced and theassembling of the parts may be done more rapidly. in practice the partsare so designed that the friction will yield or rather that the tube 6may slide on the friction head in the event that an abnormally strongpressure is exerted on the window, thereby avoiding breakage whichotherwise would take place were it physically impossible to slide thetube on the friction head after the friction is on.

While my invention has been disclosed in its preferred form,nevertheless, I do not wish to be limited to the exact details shown aschanges and modifications may readily be made without departing from thespirit of the invention or the scope of the appended claims.

I claim 1. A casement window adjuster comprising a support, a pair oflevers mounted to swing thereon, a tube slidably mounted on said levers,a handle, a rack on one of the levers and a pinion secured to saidhandle in engagement with the said rack for operating the said one leverinto frictional engagement with the said tube.

2. A casement window adjuster comprising a tube, a pair of relativelyslidable levers mounted to slide within the tube, a rack integral withone of the levers, a pinion in engagement with the said rack and ahandle for operating said pinion to move the one of the said levers intofrictional engagement with the said tube and for operating said leversand tube together in one lateral plane.

3. A casement window adjuster, comprising a support, a friction levermounted thereon, a tube slidably mounted on said lever, a friction headformed on said lever within said tube, a rack on said lover, a pinion inengagement with the said rack and a handle for operating said pinion tomove the said friction head into frictional engagement with the saidtube.

l. A casement window adjuster comprising a support, a base lever pivotedthereon, a friction lever slidably mounted on said support and on saidbase lever, a tube slidably mounted on said levers, a rack integral withsaid friction lever, a pinion supported by said base lever and a handlefor operating the said friction lever on the said base lever and supportinto frictional engage ment with the said tube.

5. A casement window adjuster comprising a tube, a friction leversupported to slide within the same, a rack on said lever, a

pinion and handle for operating a certain portion of said lever intofrictional engagement with the tube and for releasing said lever -fromfrictional engagement with the tube to permit relative sliding movementbetween the tube and the lever, a fixed support, said handle serving asa means for swinging said tube and lever on said fixed support.

6. A casement window adjuster comprising a plurality of levers mountedthereon, a tube mounted to slide on said levers and means for operatingone of said levers into frictional engagement with the said tube, saidmeans comprising a rack on one of said levers, a pinion in engagementwith the said rack and a handle carried by the other of said levers foroperating the said pinion.

7. A casement window adjuster comprising a fixed support, a plurality oflevers mounted thereon, a tube adapted to slide on said levers, ahandle, means interposed between said handle and one of the said levelsfor operating the latter into frictional engagement with the said tube,said handle being adapted to be moved into a normal position down uponand parallel with the said levers and to be moved into an uprightangular position with respect to the said levers for operating the sameon the said support.

8. A casementfriction adjuster comprising a fixed support, a pluralityof telescopically mounted elements pivoted on said support to swing in alateral plane thereon, said elements being adapted to be friotionallylocked and unlocked with respect to each other, ahandle for operatingsaid elements, said handle being adapted to assume a normal horizontallaid-clown position parallel to and 011 top of the said elements whenthelatter are friotionally locked together.

EDWIN J. SIBLEY.

